Recent ASSA Results on Comets and Meteors Tim Cooper Director, - - PowerPoint PPT Presentation

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Recent ASSA Results on Comets and Meteors Tim Cooper Director, - - PowerPoint PPT Presentation

Apr 05, 2023 211 likes •497 views

Astronomical Society of Southern Africa SYMPOSIUM 2002 Recent ASSA Results on Comets and Meteors Tim Cooper Director, Comet and Meteor Section Astronomical Society of Southern Africa SYMPOSIUM 2002 Agenda Methodology of Comet

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SLIDE 1

Astronomical Society of Southern Africa

SYMPOSIUM 2002

Recent ASSA Results on Comets and Meteors

Tim Cooper Director, Comet and Meteor Section

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SLIDE 2

Astronomical Society of Southern Africa

SYMPOSIUM 2002

Agenda

  • Methodology of Comet Observation
  • Results on a Selection of Comets
  • Methodology of Meteor Observation
  • Results on some Meteor Work
  • Future Programs and Conclusions
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SLIDE 3

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 1 Typical Comet Report

IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxx 12345678901234567890123456789012345678901234567890123456789012345678901234567890 2002C1 2002 02 03.74 S 8.2 AA 5.0B 7 4.5 3 BEG01 2002C1 2002 02 11.75 S 7.5 AA 40.OL 4 72 2 5 20 m COO02 29 2002 04 23.82 B 11.2 AC 20.0C14 85 5.5 7 1.3 XXX01 2010A1 2010 01 01.80 M 5.5:S 11.2L 8 50 10 2 XXX02 2010A1 2010 01 05.81 S 3.5 S 0.0E 1 5 XXX02

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Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 2 Degree of Condensation Scale

Totally diffuse without any brightening toward the centre of the coma 1 Very slight brightening 3 Obvious brightening but coma still very diffuse 5 Distinct brightening, would be described as moderately condensed 7 Sharp brightening with some diffuse coma, would be described as strongly condensed 9 Star-like or small disk, little if any duffuse coma

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Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 3 Comet Hale-Bopp C/1995 O1

1 2 3 4 5 6 7 8 9

920 970 1020 1070 1120 1170 1220 1270 1320 1370 1420 1470 1520 1570 1620 1670 1720 1770 1820 1870 1920 1970

Julian Date 2449900+ DC Telescope Binocular Naked Eye 20 40 60 80 100 120 140 160 180

920 970 1020 1070 1120 1170 1220 1270 1320 1370 1420 1470 1520 1570 1620 1670 1720 1770 1820 1870 1920 1970

Julian Date 2449900+ arc minutes Telescope Binocular Naked Eye

  • 2

2 4 6 8 10 12

920 970 1020 1070 1120 1170 1220 1270 1320 1370 1420 1470 1520 1570 1620 1670 1720 1770 1820 1870 1920 1970

Julian Date 2449900+ Mv Telescope Binocular Naked Eye

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SLIDE 6

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 4 Comet SOHO C/1998 J1

2 3 4 5 6 7 8 9 10

3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60

1998 May 18 + days Mv 2 3 4 5 6 7 8 9

2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60

1998 May 18 + days DC

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Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 5 Comet LINEAR C/2001 A2

3 4 5 6 7 8 9 10

1000 1007 1014 1021 1028 1035 1042 1049 1056 1063 1070 1077 1084 1091 1098 1105 1112 1119 1126 1133 1140 1147

Julian Date 2451000+ Mv Cooper Begbie Pringle-Wood 1 2 3 4 5

1000 1007 1014 1021 1028 1035 1042 1049 1056 1063 1070 1077 1084 1091 1098 1105 1112 1119 1126 1133 1140 1147

Julian Date 2451000+ Degrees Cooper Begbie Pringle-Wood 1 2 3 4 5 6 7 8 9

1000 1007 1014 1021 1028 1035 1042 1049 1056 1063 1070 1077 1084 1091 1098 1105 1112 1119 1126 1133 1140 1147

Julian Date 2451000+ DC Value Cooper Begbie Pringle-Wood Mean

  • Poly. (Mean)
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SLIDE 8

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 6 Comet LINEAR C/2000 WM1

2 3 4 5 6 7 8 9 10 11

200 207 214 221 228 235 242 249 256 263 270 277 284 291 298 305 312 319 326 333 340 347 354 361 368

Julian Date 2452000 + Mv Cooper Begbie Others

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SLIDE 9

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Meteor Rate Calculation

Rate = N / T (1) ZHR = N . F . r(6.5-LM) (2) Teff . sin h . Cp ZHR = ZHR / N (3)

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SLIDE 10

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 7 eta Aquarid Activity Profiles

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SLIDE 11

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 8 April Lyrid Activity Profiles

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SLIDE 12

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 9 Virginid Plots

Tim Cooper 1998 March 31 - Apr 5

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SLIDE 13

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 10 The Leonids in 1999

100 200 300 400 500 600 Solar Longitude Corrected Rate

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SLIDE 14

Astronomical Society of Southern Africa

SYMPOSIUM 2002

Future Programs

  • CCD photometry of faint comets
  • Comet search and discovery
  • Radio monitoring of meteors
  • Video observation of meteors
  • Double station photography of meteors
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SLIDE 15

Astronomical Society of Southern Africa

SYMPOSIUM 2002

Recent ASSA Results on Comets and Meteors

Tim Cooper Director, Comet and Meteor Section

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SLIDE 16

Astronomical Society of Southern Africa

SYMPOSIUM 2002

Agenda

  • Methodology of Comet Observation
  • Results on a Selection of Comets
  • Methodology of Meteor Observation
  • Results on some Meteor Work
  • Future Programs and Conclusions
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SLIDE 17

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 1 Typical Comet Report

IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxx 12345678901234567890123456789012345678901234567890123456789012345678901234567890 2002C1 2002 02 03.74 S 8.2 AA 5.0B 7 4.5 3 BEG01 2002C1 2002 02 11.75 S 7.5 AA 40.OL 4 72 2 5 20 m COO02 29 2002 04 23.82 B 11.2 AC 20.0C14 85 5.5 7 1.3 XXX01 2010A1 2010 01 01.80 M 5.5:S 11.2L 8 50 10 2 XXX02 2010A1 2010 01 05.81 S 3.5 S 0.0E 1 5 XXX02
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SLIDE 18

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 2 Degree of Condensation Scale

Totally diffuse without any brightening toward the centre of the coma 1 Very slight brightening 3 Obvious brightening but coma still very diffuse 5 Distinct brightening, would be described as moderately condensed 7 Sharp brightening with some diffuse coma, would be described as strongly condensed 9 Star-like or small disk, little if any duffuse coma
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SLIDE 19

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 3 Comet Hale-Bopp C/1995 O1

1 2 3 4 5 6 7 8 9 920 970 1020 1070 1120 1170 1220 1270 1320 1370 1420 1470 1520 1570 1620 1670 1720 1770 1820 1870 1920 1970 Julian Date 2449900+ DC Telescope Binocular Naked Eye 20 40 60 80 100 120 140 160 180 920 970 1020 1070 1120 1170 1220 1270 1320 1370 1420 1470 1520 1570 1620 1670 1720 1770 1820 1870 1920 1970 Julian Date 2449900+ arc minutes Telescope Binocular Naked Eye
  • 2
2 4 6 8 10 12 920 970 1020 1070 1120 1170 1220 1270 1320 1370 1420 1470 1520 1570 1620 1670 1720 1770 1820 1870 1920 1970 Julian Date 2449900+ Mv Telescope Binocular Naked Eye
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SLIDE 20

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 4 Comet SOHO C/1998 J1

2 3 4 5 6 7 8 9 10 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 1998 May 18 + days Mv 2 3 4 5 6 7 8 9 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 1998 May 18 + days DC
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SLIDE 21

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 5 Comet LINEAR C/2001 A2

3 4 5 6 7 8 9 10 1000 1007 1014 1021 1028 1035 1042 1049 1056 1063 1070 1077 1084 1091 1098 1105 1112 1119 1126 1133 1140 1147 Julian Date 2451000+ Mv Cooper Begbie Pringle-Wood 1 2 3 4 5 1000 1007 1014 1021 1028 1035 1042 1049 1056 1063 1070 1077 1084 1091 1098 1105 1112 1119 1126 1133 1140 1147 Julian Date 2451000+ Degrees Cooper Begbie Pringle-Wood 1 2 3 4 5 6 7 8 9 1000 1007 1014 1021 1028 1035 1042 1049 1056 1063 1070 1077 1084 1091 1098 1105 1112 1119 1126 1133 1140 1147 Julian Date 2451000+ DC Value Cooper Begbie Pringle-Wood Mean
  • Poly. (Mean)
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SLIDE 22

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 6 Comet LINEAR C/2000 WM1

2 3 4 5 6 7 8 9 10 11

200 207 214 221 228 235 242 249 256 263 270 277 284 291 298 305 312 319 326 333 340 347 354 361 368

Julian Date 2452000 + Mv Cooper Begbie Others

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SLIDE 23

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Meteor Rate Calculation

Rate = N / T (1) ZHR = N . F . r(6.5-LM) (2) Teff . sin h . Cp ZHR = ZHR / N (3)

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SLIDE 24

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 7 eta Aquarid Activity Profiles

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SLIDE 25

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 8 April Lyrid Activity Profiles

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SLIDE 26

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 9 Virginid Plots

Tim Cooper 1998 March 31 - Apr 5

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SLIDE 27

Astronomical Society of Southern Africa

SYMPOSIUM 2002 Figure 10 The Leonids in 1999

100 200 300 400 500 600 Solar Longitude Corrected Rate

slide-28
SLIDE 28

Astronomical Society of Southern Africa

SYMPOSIUM 2002

Future Programs

  • CCD photometry of faint comets
  • Comet search and discovery
  • Radio monitoring of meteors
  • Video observation of meteors
  • Double station photography of meteors